Combined oil and gas furnace



E. A. QUINN.

COMBINED OIL AND GAS FURNACE. APPUCATION man Nov so. |921.

@ Azg f mma 00e. 17, w22,

)im H MVENTOR 7 wha/MM ATTCORNEY Patented @cto l?,

narran realer CMBENED @EL AND GAS FURNACE.

Application filed November 30, 1921. Serial No. 518,935.

To all whomt may concern Be it known that l, ldnevann QUrNN, a citizenof the United States, and resident ot' Fresno, in the county ofFresno'and the State of California, have invented a new and usefullinprovement in Combined @il and Gas Furnaces, ol which the following isa specification. i

My invention relates to an improved type of furnace wherein either oilorgas can be used for fuel. The object l have accomplished is theconstruction of a combination furnace in which manufactured or naturalgas can be used economic-ally as fuel, and if it is desired oil can besubstituted, and heat developed `from one burner will not overheat ormelt the other burner.

l attain these objects bythe device here inalter described andillustrated in the accompanying drawings, in which Figure 1 is a plan.view of the furnace showing the two burners within the combustionchamber.. Figure 2 is an elevation of the device, partly in sectionalong broken line oi--a in Figure 1, showing the location of tiles inwhich the gas is discharged. rlhis view also shows location oit oilburner in relation to the gas burners. Figure 3 is a iront elevationalong sectional line but) in Figure 1. Figure Ll is al sectionalelevation ot two gas burners. Figure 5 is a view ot a tile. Figure (5 isa cross sectional View of the tile along the line c-c in lligure 5.Similar reference characters refer to similar parts throughout theseveral views.

Branch'header 1 is connected to source of fuel supply 2, and issupported by rods 3, the ends ol which are supported by the tur naceywalls. Nipples l are connected to branch header 1 as shown moredefinitely in Figure il, their ends being closed'by caps 5, in order toforce the gas to flow through small hole or opening 6 in nipple a. Atile T is set overeach nipple ll, a longitudinal slot 8 'being providedin the bottom of tiles 7 for the purpose of easily assembling thenipples and the tiles. position by brick floor 9, said floor resting onsupporting rods 3a. Floor 9 is constructed to the tops of the tiling. @nthe top of floor 9 is a course of lire bricks 10 arranged to leaveapertures above the openings in the tiling.l lt is here noted that thelloor 9 is on an incline which rises as it recedes from the oil burnerll. llllhen it is neces- 'llles 7 are held insary to use oil burner 14the flame and heat are reflected upward by said floor.

ll have placed a courseof soap bricks 11 on the top of the lire bricks10, and over the openings in the tiles, thus forming an open space 12shown in Figure 3. Soap bricks 11 form a baille for the llame and gascoming out of the tiling. @ne object being accomplished thereby is thebreaking up of the gas vand thus aiding combustion. @penings in thefloor except the openings 12 referredl to are filled in with asbestosand clay.

'lhe tile 7 has a plurality of holes 13. in a circumferential line onthe same plane as the center line ofthe nipple 4, as shown in Figure 5.rl`he function of holes 13 is to admit air to aid combustion. Theshutters 18 are hingedto rod or pipe 3, and are ad justable by a chainor rod 18a.

The oil burner 14- is placed in a compartment or alcove 15 at the backof the furnace, and so placed as to direct the flame over the soap brickballles 11, as the Haine and heat natural relect upwardly, the object ofthis construction being to carry the flame beyond the alcove. rlhe fuelsupply pipe 16 to the oil burner is supported by rods 17, and isconnected with a source ol oil supply 26. 26a is a valve for regulatingthe supply of oil admitted to the burner. 2b is a valve for regulatingthe supply of gas admitted to the furnace. The combustion chamber isconstructed of concrete and fire brick. rllhe rods or pipes 3 and 17are. supported by hre brick walls.

l claim as new and ask for Letters Patent:

1. The combination within a combustion chamber of an oil burner adaptedto direct a Haine in an 'approximately horizontal plane a spaceddistance therefrom, and a plurality ot gas burnerseach of the gasburners being housed within a tiling arranged so the tops thereof are onan incline which rises as it recedes from the oil burner, the tops ofthe tiling being covered with refractory1 material except outletopenings for the llame generated within said tiling, substantially asdescribed.

2. rThe combination within a combustion chamber of an oil burner adaptedto direct a llame in an approximately horizontal plane a spaced distancetherefrom, and a plurality ot' gas burners, each of the gas burnersbeing housed within a tiling arranged so the tops thereof are ,on a lineuniformly rising from said horizontal plane as they recede from the oilburner, the tops of the tiling being covered with refractory materialexcept outlet openings for the flame generated Within said tiling, thecombustion chamber being filled with `noncombustib1e material to theapproximate tops of the tiling, leads for supplying air to the interiorof the tiling, substantially as described.

3. VIn combination with a combustion chamber, a gas burner Withinsaidchamber consisting of upright tubes of refractory material, means fordischarging a jet of gasl Within each of said tubes, a plurality ofholes through the Walls of the tubes adjacent to the position where theas is discharged, said tubes being partially covered at the top withrefractory material, the tubes being arranged so that the level of thetops of the tubes to the rear of the furnace are lower than those nearthe front of the combustion chamber, and an oil burner Within thecombustion chamber at the rear end thereof adapted to throw a flame overthe top of the tubes, substantially as described.

i 'EDWARD A. QUINN.

